20537818

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:462

約数の個数: 32

約数和(自身を含む): 36391680

約数和(自身を除く): 15853862

約数列:

[1, 2, 7, 14, 53, 89, 106, 178, 311, 371, 622, 623, 742, 1246, 2177, 4354, 4717, 9434, 16483, 27679, 32966, 33019, 55358, 66038, 115381, 193753, 230762, 387506, 1466987, 2933974, 10268909, 20537818]

約数ペア:

[(1, 20537818), (2, 10268909), (7, 2933974), (14, 1466987), (53, 387506), (89, 230762), (106, 193753), (178, 115381), (311, 66038), (371, 55358), (622, 33019), (623, 32966), (742, 27679), (1246, 16483), (2177, 9434), (4354, 4717)]